Pneumatic motor and speed-governor.



N0.'797,1B1. PATENTED AUGH15- 1905.

- T. DANQUARD.

PNEUMATIC MOTOR AND SPEED GOVERNOR.

APPLIOATION FILED FEB. s, 1905.

2 SHEETS-SHEET 1.

3/ e333 FIGQL.

WITNESSES:

HWENTOR MZ QE M BY a ATTORNEY N0. 797,181- PATENTED AUG. 15, 1905.

T. DANQUARD. PNEUMATIC MOTOR AND SPEED GOVERNOR. APPLICATION FILED FEB. a. 1905.

2 SHEETS-SHEET 2 l & n 1

NVENTOR ATTORNEY inniari' s l illli-l'tlhll-ifi DANQUARD, OF llANO COMPANY, OF YORK.

TES

Specification of Letters Patent.

ATFNT OFFltlllil.

MOT Ol f AND SPEED-GOVEHNUH.

Patented Aug. 15, 1905.

Original application filed October 8, 190&, Serial No. 227,625. Divided and this application filed February 8, 1905. Serial No. M4319.

To all whom it may concern.-

Be it known that l, TrIoMAs DANQUARD, a citizen of the United States of America, residing at the city of New York, State of New York, have invented certain new and useful Improvements in Pneumatic lvlotors and tipeed-(ilovernors, of which the following is a specification.

This a 'mlicationds a division of my pendin g application to patent Mechanical musical instruments filed October 8, 190a, and having Serial No. 227,625.

The herein-described invention relates to a motor of that general pneumatic class used to propel the music-sheet in an automatic pianoplayer or self-playing piano or like mechanical musical instrument; and the invention has for its object to provide simple, efficient, and durable devices whereby the speed of the motor and music-sheet may be governed or regulated at the will of the performer to assure any desired tempo" of the music.

The invention will first be described and then will be particularly defined in claims hereinafter set forth.

Reference is made to the accompanying drawings, forming part of this specification, and in which- Figure 1 is a front view of the improved pneumatic motor and speed-governor and adjacent portions of a pneumatic-action windchest and the motor-valve-operating mechanism. Fig. 2 is a longitudinal vertical sectional view of the motor and governor and adjacent parts, taken on the line a a in Fig. a. Fig. 3 is a vertical section taken on the line b 7) in Fig. i. Fig. at is a plan view of the motor. Fig. 5 is a vertical cross-section taken on the line 0 c in Fig. 3. Fig. 6 is a vertical cross-section taken on the line (Z d in Fig. 3. Fig. '7 is a partly-broken-out sectional front view showing a modified motor and speed governor. Fig. 8 is a vertical transverse section thereof, taken on the line (2 c in Fig. 7; and Fig. 9 is a plan View of this modification, partly in horizontal section.

In one prior governor intended for regulating the speed of a music-sheet motor to assure required tempo of the music agovernorvalve located between the motor and the main wind-inducing bellows has been automatically operated by a governor-pneumatic having direct connection with the bellows. in another prior construction and for like pur pose a valved governor-pneumatic has been interposed in the windway between the motor and the bellows.

Both of the improved motors and speedgovernors herein shown and described have one common or generic novel feature in that the valves which directly control the motorshaft-turning pneumatics are incloscd within a casing having communication with a governor-pneumatic which is not directly connected with the main bellows and is not located between the motor and said bellows. This governor-pneumatic nevertheless controls a means or valve which automatically regulates the flow of air through the motor to assure its uniform rotation at any desired speed.

In the construction shown in Figs. 1 to 6 of the drawings the numeral 1 indicates the motor wind-chest, which at one end may have a forward extension 2, accommodatingspecial passages and valves hereinafter described. A portion of the chest 1 is shown partly filled by a block 3, or the chest may be partitioned to form an interior chamber f, which is shown extending the full length of the chest and broadening at its end extension 2. To the chest 1 are secured a number of bellowspneumatics 5, which connect by pitmen 6 with cranks of the motor-driving shaft 7, from which a chain belt 8 may run to the musicshcet rolls, which need no illustration. Links 9 connect the pitmen 6 with the stems of a series of valves 10, which are preferably slide-valves arranged one for each pneumatic 5. The motor-valves 10 are all incloscd within the chamber 11 of a casing 12, preferably lixed to the motor wind-chest 1. Series of ports 13 14: respectively connect said chamber 11 with the motorpneumatics 5 and the wind-chest chamber 4:, and said chamber 4 in a preferred construction opens by either of two ports 15 16 into a common outlet-passage 17, which communicates with the action windchest 18, through which air is moved by the main bellows (not shown) of the piano-player or other mechanical musical instrument. Preferably on the casing 12 is arranged a governor-pneumatic 19, the movable wall of which connects by a stem 20 with a valve 2], herein shown as a flap-valve located in the motor wind-chest chamber J: and controlling its air-outlet port 15. The governorpneumatic 19 communicates directly by a port with the chamber 11 of the motor-valve casing 12. Another flap-valve 23 controls the port 16 and is shown coupled by a stem 24 to one end of a crank-arm 25, the other end of which engages a block 26, fixed to the stem 27 of a reroll-valve 28, preferably sliding upon the outside of the valve-casing 12 and controlling a port 29, opening from the atmosphere into this casing. The valve'stem 27 is shown coupled to an armed rocking lever 30, connected by a link 31 with the usual reroll stop-lever 32. A tem po-valve 33, which is shown sliding on the motor-valve casing 12 over its port 34, has a stem 35 coupled to the usual tempo stop-lever 36 of the instrument.

The operation of the governed music-sheet motor (shown in Figs. 1 to 6 of the drawings) is as follows: hen the lever 36 is adjusted to open the tempo-valve 33 sufiiciently to assure the desired speed of rotation of the motor-shaft 7 and proper speed of travel of the music-sheet, atmospheric air entering the port 34 is drawn by the main bellows-exhaust through the chamber 11 of the casing 12 and past the motor-valves 10, which will cause inflation and collapse of the pneumatics 5 as the air is drawn through them via the ports 14 13 and through the chamber 4 and thence past the open governor-valve 21 to theport 15 and passage 17 to the main wind-chest 18. Should the main bellows-operating pedals now be irregularly worked, either accidentally or intentionally, the governor pneumatic 19, which is under influence of the exhaust through the port 22, opening into the chamber 11 of the valve-casing 12, will be collapsed more or less and will correspondingly operate the governor-valve 21 to more or less choke the air-outlet at the port 15 and passage 17 to the wind-chest 18, and thus will the desired predetermined speed of the motor and musicsheet be regularly maintained irrespective of the manner of working the air-eXhaust-producing pedals and bellows of the instrument. Should it be necessary to rewind the musicsheet upon its delivery-roll, the reroll stop lever 32 is moved to the left hand, and its above-described connections 24 to 31 will simultaneously move both valves 28 23 and open their respective ports 16 29, and thus permit free passage of atmospheric air through the port 29, the motor-valve-casing chamber 11, the motor-valves 10, the pneumatics 5, the motor-wind-chest chamber 4, and the ports 15 17 to the wind-chest 18 and the main windinducing devices of the instrument. This allows full volume of air to pass through the motor to assure its maximum speed for quickly rewinding the music-sheet and entirely independent of the tempo-valve 33, which then may be open toany extent or may be entirely closed.

The modified motor and governor shown in Figs. 7, 8, and 9 of the drawings will now be described. In this construction the casing 40, which incloses the motor-pneumatic valves 10, also has a port 22, forming a windway connection for the governor-pneumatic 19. This I casing 40 also incloses the motor-pneumatics 5 and the connections 6 therefrom to the n10- tor-driving shaft 7 and valve-operating pitmen 9. The port 22 is shown in the top wall of the casing 40, and the governormenmatic valve 41 and the two reroll-valves 42 43 are all of the slide-valve type and are preferably arranged in line in a valve-chest 44 at the back of the casing. Said valve-chest has an airpassage 45 common to the two valves 41 43 and opening at 46 to the wind-chest 18. The valve 42 controls a port 47, admitting atmospheric air to the casing40 to find outlet through a port 48 past the open valve 43 during rewinding of the music-sheet. To assure such operation, both Valves 42 43, having stems connected by a cross-head 49, are simultaneously lifted or opened by one arm of an elbowlever 50, which is coupled to the reroll stoplever 32. The pneumatic-governor valve 41 controls a port 51, leading from the casing 40 to the valve-chest passage 45 and wind-chest passage 46. The tempo-valve 52 is shown arranged at the front of the casing 40 to control a port 53 in the casing. admitting atmospheric air thereto and to the motor-valves 10. The valve 52 may be coupled by a link 54 with the tempo-controlling sto p-lever 36. The operation of this modified motor is substantially similar to that of the valveincased motor of Figs. 1 to 6 of the drawings. WVhen the tempo-valve 52 is opened more or less by operating the'lever 36, atmospheric air entering the casing 40 at the port 53 will pass through the motor-valves 10, which will cause inflation and collapse of the pneumatics 5 to rotate the motor-driving shaft 6, and the air will escape through the port 51 past the governor-valve 41, which is automatically actuated by the pneumatic 19, acting under influence of the air-exhaust to throttle the port 51 more or less to maintain any desired speed of the motor, however the wind-inducing pedals and bellows may be operated. The simultaneous opening of the ports 47 48 by moving the valves 42 43 by or from the reroll stop-lever 23 will assure full wind-current to obtain maximum motor speed during rewinding of the music-sheet and independently of the position or adjustment of the tempo-valve 52. This modified motor has a few advantages'over the valve-incased motor first described in that the entire motor is protected by its casing40 from dust and dirt, and the ease and steadiness of working of the motor are facilitated by the collapse and inflation of the pneumatics 5 within a partial vacuum induced by exhausting air from the casing 40.

It is obvious that the second reroll-valve 28 or 42 of the above-described motors may be dispensed with if it is desired to fully open the tempo-valve when the music-sheet is to be re- Wound; but the use of the two reroll-valves for either motor is preferred in practice, as it assures maximum motor speed by operating only the reroll-lever, thus obviating the necessity of operating the tempo-lever to assure quick revvinding of the music-sheet.

Various modifications of this invention may be made by the skilled mechanic within the scope of the appended claims as, for instance, the motor may have any style of pneumatic devices operating its driving shaft, with valves or other means for controlling said devices-and any type of valve or other device may be used to admit air to the motor-valve casing or to the casing inclosing the entire motor, and the governor-pneumatic communicating with said casing may be variously formed or applied, and any suitable means or valve controlled by the governor-pneumatic may be used to automatically regulate the air-current to maintain desired speed of the motor.

ll claim as my invention 1. A pneumatic motor and speed-governor, comprising a motor including a driving-shaft with pneumatic devices actuating said shaft and means directly controlling operation of said pneumatic devices, a casing inclosing said means controlling the pneumatic devices, means regulating inlet of air to said casing, governor-pneumatic communicating with the casing, and means in the motor-Windway controlled by said governor-pneumatic and automatically regulating the air-current to maintain any desired speed of the motor.

2. A pneumatic motor and speed-governor, comprising a motor including a driving-shaft with pneumatics actuating said shaft and valves directly controlling operation of said pneumatics, a casing inclosingsaid pneumaticcontrolling valves, means regulating inlet of air to said valve-inclosing casing, a governorpneumatic communicating With the casing, and a valve in the motor-windway controlled by said governor-pneumatic and automatically regulating the air-current to maintain any desired speed of the motor.

3. A pneumatic motor and speed-governor, comprising a motor including a driving-shaft with pneumatic devices actuating it and means directly controlling operation of said pneumatic devices, a casing inclosing said motor, means regulating inlet of air to said motorinclosing casing, a governor-pneumatic communicating with said casing, and means in the inotor-windway controlled by said governorpneumatic and automatically regulating the air-current to maintain any desired speed of the incased motor.

a. A pneumatic motor and speed-governor, comprising a motor including a driving-slmft with pneumatics actuating said shaft and valves directly controlling ope 'ation of said pneumatics, a casing ll'lClOSiHg' said motor,

means regulating inlet of air to said motorinclosing casing, a goveriior-pneumatlc comi'nunicating with said casing, and a valve in the motor-windway controlled by said governor-pl'icumatic and automatically regulating the air-current to maintain any desired speed of the incased motor.

5. A pneumatic motor comprising a driving-shaft, pneumatics and connections therefrom to saii'l shaft for rotating it, valves controlling the motor-shaft-driving pneumatics, and a casing inclosing said valves, combined with a governor com prising a pneumatic opening to said casing and a valve in the motorwindway automatically controlled by the governorpneumatic, and a tempowmlve control ling admission of air to the valve-inclosing casing.

6. A pneumatic motor comprising a driving-shaft, pneumatics and connections therefrom to said shaft for rotating it, valves controlling the motor-shalt-driving pneumatics, and a casing inclosing said valves, combined with a governor com prising a pneumatic opening to said casing and a valve in the motorwind way automatically controlled by the governor-. 'meumatic, a tempo-valve controlling admission of air to the wilve-inclosing c: sing, and a reroll-valve operating in the windway between the motorvalves and the wind-inducing devices.

7. A pneumatic motor comprising a driving-shaft, pneumatics and connections therefrom to said shaft for rotating it, valves controlling the motor-shaft-driving rmeumatics, and a casing inclosing said valves, combined with a governor comprising a pneumatic opening to said casing, a valve in the motor-windway auton'iatically con trolled by the governor pneumatic, a tempo-valve controlling admission of air to the valve-casing; and two simultaneously-actuated l'Gl'Oll-VtthQS, one operating in the wind way between the motor-valves and the wind-inducing devices and the other operating at an opening admitting air to the motor-valve-inclosing casing.

8. A pneumatic ll'lOlZOl' comprising a driving-shaft, pneumatics and connections therefrom to said shaft for rotating it, valves controlling motorshaft-driving pneumatics, and a casing inclosing said valves and the motor- 'meumatics and the connections therefrom to the n'iotor-driving shaft, combined with a governor comprising a pneui'uatic opening to said casing and a valve in the motor-windway auto matically controlled by the governor pneumatic, and a tempo-valve controlling admission of air to the motor-inclosing casing.

9. A pneumatic motor comprising a driving-shaft, pneumatics and connectiol'is therefrom to said shaft for rotating it, valves con trolling the motor'shaft-driving pneumatics, and a casing inclosing said valves and the motor-pneumatics and the connections therefrom to the motor-driving shaft, combined with a governor comprising a pneumatic opening to said casing and a valve in the motorwind way automatically controlled by the governor-pneumatic, a tempo-valve controlling admission of air to the motor-inclosing casing; and a reroll-valve operating in the windway between the motor-valves and the windinducing devices.

10. A pneumatic motor comprising a driving-shaft, pneumatics and connections therefrom to said shaft for rotating it, valves controlling the motor-shat't-driving pneumatics, and a casing inclosing said valves and the motor-pneumatics and the connections therefrom to the motor-driving shaft, combined with a governor comprising a pneumatic opening to saidcasing and a valve in the motor-windway automatically controlled by the governorpneumatic, a tempo-valve controlling admission of air to the motor-inclosing casing; and two simultaneously-actuated reroll-valves, one operating in the windway between the motorvalves and the wind-inducing devices and the other operating at an opening admitting air to the motor-inclosing casing.

11. Agoverned pneumatic motor, comprising a chambered and ported wind-chest 1 communicating with wind-inducing devices, pneumatics 5 communicating with the ports of chest 1, valves 10 controlling the pneumatics 5, means operating the valves 10 and the motordriving shaft from the pneumatics 5, a casing inclosing the valves 10, a governor-pneumatic 19 opening to said valve-casing, a valve at the air-outlet of chest 1, connections from the pneumatic 19 to said outlet-valve, and a valve admitting air to the motor-valve casing.

12. A governed pneumatic motor comprising a chambered and ported wind-chest 1 communicating with wind-inducing devices, pneumatics 5 communicating with the ports of chest 1, valves 10 controlling the pneumatics 5, a

casing inclosing the valves 10, the pneumatics 5 and the connections 9, 6, of said pneumatics with the valves 10 and the motor -driving shaft; a governor-pneumatic 19 opening into the casing, a valve at the air-outlet of said casing, connections from the pneumatic 19 to said outlet-valve, and a valve admitting air to the motor-inclosing casing.

13. A governed pneumatic motor comprising a wind-chest 1 having ports 13, 14:, and chamber at, and ports 15, 16, opening to windinducing devices, pneumatics 5 connecting with the ports 13, 14:, valves 10 controlling the ports 13, 1 1 and pneumatics 5 and operated by said pneumatics, a casing 12 inclosing the valves 10 and having a port 3 1, a governorpneumatic 19 connecting by a port 22 with the casing 12, a valve 21 working at port 15 and operated by the pneumatic 19, a rerollvalve 23 operative at the port 16, and a tempovalve 33 operative at the port 3A, substantially as described.

1 1. A governed pneumatic motor comprising a wind-chest having ports 13, 1 1 and chamber 1, and ports 15, 16 opening to wind-inducing devices, pneumatics 5 connecting with the ports 13, 14, valves 10 controlling the ports 13, 1 1 and pneumatics 5 and operated by said pneumatics, a casing 12 inclosing the valves 10 and having ports 3A, 29, a governor=pneu matic 19 connecting by port 22 with the casing 12, a valve 21 working at the port 15 and operated by the pneumatic 19; a reroll-valve 28 operative at the port 29, a simultaneouslyworking reroll-valve 23 operative at the port 16, and a tempo-valve 33 working at the port 34, substantially as described.

THOMAS DANQUARD.

Vitnesses:

ALVIN K, GOODWIX, P. C. EOKHARDT, Jr. 

